Abrupt environmental changes during the last 30 kyr in the southern margin of the Taklimakan Desert, a record from an oasis

doi:10.1016/j.quascirev.2018.09.036

	Abrupt environmental changes during the last 30 kyr in the southern margin of the Taklimakan Desert, a record from an oasis
	Shu, Peixian 2,3,4; Li, Baosheng 2,5; Wang, Hong 2,6; Cheng, Peng 2; An, Zhisheng 2; Zhou, Weijian 2; Zhang, David Dian 1,7; Dodson, John 2,8; Niu, Dongfeng 9; Si, Yuejun 10
刊名	QUATERNARY SCIENCE REVIEWS
	2018-12-01
卷号	201 页码:29-43
关键词	Oasis Radiocarbon dating Abrupt environmental change Last glaciation Holocene Taklimakan desert
ISSN号	0277-3791
DOI	10.1016/j.quascirev.2018.09.036
通讯作者	Li, Baosheng(libsh@scnu.edu)
英文摘要	The Taklimakan Desert, the largest sand sea in China, is one of the most important sources of dust in the world. Millennial-scale abrupt climate changes during the last glacial and Holocene periods occurred in the region. However, these records remain poorly understood because dating eolian, lacustrine, and fluvial sediments and establishing reliable environmental proxies are challenging in this setting. Here, we use accelerator mass spectrometry (AMS), grain size, and Rb/Sr ratios of bulk sediments from an oasis sequence in the Taklimakan Desert. While some C-14 dates results are not in the stratigraphic order, most of them can be grouped in four age groups during the Last Glacial. We infer that reversals of radiocarbon age based on total organic carbon (TOC) was controlled by organic carbon (OC) input from the regional carbon pool. We selected C-14 dates from the four age groups, to develop an age-depth model for a basin-wide chronology. Peaks in a cumulative probability curve of radiocarbon dates, with high Rb/Sr ratios and fine mean grain sizes, reveal four wet periods during the Last Glaciation, and one wetter/warmer period during the Holocene. The regional moisture variability appears to be influenced by the Asian summer monsoon and mid-latitude Westerlies. The Holocene wetter/warmer period facilitated human occupation of the oasis. (C) 2018 Elsevier Ltd. All rights reserved.
资助项目	National Natural Science Foundation of China[41290250] ; National Basic Research Program of China[2013CB955903] ; External Cooperation Program of BIC, Chinese Academy of Sciences[132B61KYSB20130003] ; State Key Laboratory of Loess and Quaternary Geology[KLLQG1635]
WOS关键词	LATE QUATERNARY LOESS ; TARIM BASIN ; WESTERN CHINA ; KERIYA RIVER ; TAKLAMAKAN DESERT ; CENTRAL-ASIA ; LOP NUR ; HOLOCENE HISTORY ; LAKE-SEDIMENTS ; DUST EMISSION
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000452934700003
资助机构	National Natural Science Foundation of China ; National Basic Research Program of China ; External Cooperation Program of BIC, Chinese Academy of Sciences ; State Key Laboratory of Loess and Quaternary Geology
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/14531]
专题	地球环境研究所_加速器质谱中心
通讯作者	Li, Baosheng
作者单位	1.Univ Hong Kong, Dept Geog, Hong Kong, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Univ Illinois, Dept Anthropol, Urbana, IL 61801 USA 5.South China Normal Univ, Sch Geog, Guangzhou 510631, Guangdong, Peoples R China 6.Univ Illinois, Illinois State Geol Survey, Prairie Res Inst, Champaign, IL USA 7.Guangzhou Univ, Sch Geog, Guangzhou 510631, Guangdong, Peoples R China 8.Univ Wollongong, Sch Earth Atmospher & Life Sci, Wollongong, NSW 2522, Australia 9.Lingnan Normal Univ, Sch Phys Sci & Technol, Zhanjiang 524048, Peoples R China 10.Guangxi Teachers Educ Univ, Sch Geog & Planning, Nanning 530001, Peoples R China
推荐引用方式 GB/T 7714	Shu, Peixian,Li, Baosheng,Wang, Hong,et al. Abrupt environmental changes during the last 30 kyr in the southern margin of the Taklimakan Desert, a record from an oasis[J]. QUATERNARY SCIENCE REVIEWS,2018,201:29-43.
APA	Shu, Peixian.,Li, Baosheng.,Wang, Hong.,Cheng, Peng.,An, Zhisheng.,...&Qiu, Yahui.(2018).Abrupt environmental changes during the last 30 kyr in the southern margin of the Taklimakan Desert, a record from an oasis.QUATERNARY SCIENCE REVIEWS,201,29-43.
MLA	Shu, Peixian,et al."Abrupt environmental changes during the last 30 kyr in the southern margin of the Taklimakan Desert, a record from an oasis".QUATERNARY SCIENCE REVIEWS 201(2018):29-43.